Project Summary
stud is a network proxy that terminates TLS/SSL connections and forwards the unencrypted traffic to some backend. It's designed to handle 10s of thousands of connections efficiently on multicore machines.
It follows a process-per-core model; a parent process spawns N children who each accept() on a common socket to distribute connected clients among them. Within each child, asynchronous socket I/O is conducted across the local connections using libev and OpenSSL's nonblocking API. By default, stud has an overhead of ~200KB per connection--it preallocates some buffer space for data in flight between frontend and backend.
In a Nutshell, Stud...
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took an estimated 1 years of effort (COCOMO model)
starting with its first commit in June, 2011
ending with its most recent commit over 10 years ago
Quick Reference
BSD 2-clause "FreeBSD" License
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These details are provided for information only. No information here is legal advice and should not be used as such.
Project Security
Vulnerabilities per Version ( last 10 releases )
There are no reported vulnerabilities
Project Vulnerability Report
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30 Day SummaryJun 8 2026 — Jul 8 2026
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12 Month SummaryJul 8 2025 — Jul 8 2026
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